Difference between revisions of "It's a bit unclear to me when you talk about "error" in PID control"

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The error is the difference between the reference operating point and the current operating point.  In the cruise control example, the reference operating point is the desired speed, and the current operating point is the current speed.  So if you want a car to go 60 mph (reference) and it's only going 55 mph (current), then the error is 5 mph (reference - current).
 
The error is the difference between the reference operating point and the current operating point.  In the cruise control example, the reference operating point is the desired speed, and the current operating point is the current speed.  So if you want a car to go 60 mph (reference) and it's only going 55 mph (current), then the error is 5 mph (reference - current).
  
--[[User:Hines|Hines]] 17:04, 3 October 2007 (PDT) 17:01, 3 October 2007 (PDT)
+
--[[User:Hines|George Hines]] 17:04, 3 October 2007 (PDT)
  
 
[[Category: CDS 101/110 FAQ - Lecture 1-1]]
 
[[Category: CDS 101/110 FAQ - Lecture 1-1]]
 
[[Category: CDS 101/110 FAQ - Lecture 1-1, Fall 2007]]
 
[[Category: CDS 101/110 FAQ - Lecture 1-1, Fall 2007]]

Revision as of 00:05, 4 October 2007

The error is the difference between the reference operating point and the current operating point. In the cruise control example, the reference operating point is the desired speed, and the current operating point is the current speed. So if you want a car to go 60 mph (reference) and it's only going 55 mph (current), then the error is 5 mph (reference - current).

--George Hines 17:04, 3 October 2007 (PDT)